First create the customer profile (name, address, etc.). Then you can assign as many payment profiles to it as you want, of either credit card or bank account types (assuming you have support for both types of payment). I personally use a page that loads all the current profiles, displays the hashed info (************1234) for each payment profile, and has buttons next to each profile for edit (brings up the edit popup) and remove (assuming there is more than one payment profile), and a link for add (brings up the add a payment profile popup). Every time onPopupClosed() fires, it refreshes the page, so updates appear on the list.
